JP5452541B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner.

  As a conventional air conditioner for centralized cooling and heating, there is a duct type that distributes and blows cold air or warm air to a plurality of air-conditioned rooms through a duct and a plurality of branch ducts.

  In Patent Literature 1, in an air conditioner in which a damper is attached to each branch duct, a difference in airflow resistance of each branch duct is detected in advance, and the air volume of each terminal air volume control unit is indirectly estimated, It is described that information on how to control an appropriate opening / closing degree of a damper with respect to a set air volume of an air conditioning room is stored. Thus, according to Patent Document 1, it is supposed that an appropriate amount of air can be stably supplied to each air-conditioned room by appropriately controlling the degree of opening and closing of the damper based on the above information in the actual operation mode. ing.

Japanese Patent No. 2661274

  Patent Document 1 does not specifically describe how to determine and set the set air volume (individual required air volume) of each air-conditioned room.

  On the other hand, a case will be considered in which the individual required air volume corresponding to the temperature condition of each air-conditioned room is determined and set with reference to the determination information of the individual required air volume determined in advance according to the resistance coefficient of the ventilation path and the transport air volume. In this case, the sum of the individual required air volumes of each air-conditioned room is controlled to be the air volume of the air conditioner, but in the distribution of air to each air-conditioned room by such air volume, Depending on the resistance coefficient of the air flow path and the accuracy of the conveyance air volume, and the resistance coefficient is improperly set due to actual use conditions and setting errors, air with an appropriate air volume can be distributed to each air-conditioned room. There is no tendency.

  Consider a case where the individual required air volume of each air-conditioned room is set in proportion to the temperature difference between the set room temperature and the actual room temperature. In this case, the distribution of air to each air-conditioned room is not necessarily suitable for the size of the air-conditioned room and the air-conditioning load, and as a result, the state of excessive or insufficient air conditioning continues or the rise of air conditioning becomes slow. May cause problems. Thereby, it exists in the tendency which cannot distribute the air of appropriate air volume with respect to each air-conditioned room.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the air conditioner which can distribute the air of appropriate air volume to each air-conditioned room.

  In order to solve the above-described problems and achieve the object, an air conditioner according to one aspect of the present invention includes a plurality of air exchanged by a blower through a duct and a plurality of branch ducts. A centralized air blower that distributes and blows air to the air-conditioned room, an air volume setting means that sets an air volume required in the air-conditioned room as an individual required air volume for each of the plurality of air-conditioned rooms, and the plurality of branch ducts A plurality of air flow rate adjusting devices that adjust the air flow rate of air passing through the set individual required air volume, a plurality of room temperature setting means for setting the room temperature of the plurality of air-conditioned rooms, and the plurality of air-conditioned objects A plurality of room temperature detecting means for detecting the room temperature of the room, and the air volume setting means sets the individual required air volume of the air-conditioned room performing the air-conditioning operation to an initial value at the start of the air-conditioning operation of one or more air-conditioned rooms. Initial value setting means and cold When the detected room temperature is lower than the set room temperature, it is determined that the capacity is excessive for the air-conditioned room to be operated, and the capacity is insufficient when the detected room temperature is higher than the set room temperature. When the detected room temperature is higher than the set room temperature, it is determined that the capacity is excessive, and the detected room temperature is set. A determination unit that determines that the capacity is insufficient when the temperature is lower than room temperature, and a correction that reduces the set individual required air volume for the air-conditioned room that is determined to have excessive capacity by the determination unit, And correction means for correcting the air-conditioned room determined to be insufficient by the determination means so as to increase the set individual required air volume.

  According to the present invention, it is possible to distribute an appropriate amount of air flow to each air-conditioned room according to whether the air-conditioning room has excess or insufficient air-conditioning capacity regardless of the resistance coefficient of each air passage and the accuracy of the conveyance air volume. That is, an appropriate air volume can be distributed to each air-conditioned room.

Drawing 1 is a figure showing the composition of the air harmony machine concerning an embodiment. FIG. 2 is a flowchart showing the operation of the air conditioner according to the embodiment. FIG. 3 is a diagram illustrating a setting range of the individual required air volume in the embodiment. FIG. 4 is a diagram illustrating a setting range of the individual required air volume in a modification of the embodiment.

  Embodiments of an air conditioner according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
An air conditioner 100 according to an embodiment will be described with reference to FIG. FIG. 1 is a configuration diagram illustrating the entire system of the air conditioner 100.

  The air conditioner 100 can perform centralized cooling and heating in which cold air or hot air is blown from a single air-conditioning source to a plurality of air-conditioned rooms, and the amount of air blown to each air-conditioned room can be individually adjusted for each air-conditioned room. Is. Specifically, the air conditioner 100 includes a central air blower 6, a plurality of air flow rate adjusting devices 7a to 7d, a plurality of room temperature setting units 18a to 18d, a plurality of room temperature detection units 9a to 9d, a resistance coefficient setting unit 12, A damper opening / closing determination unit 17, a total required air volume determination unit 15, and a frequency determination unit 16 are provided.

  The concentrated air blower 6 includes a heat exchanger 2, a blower 3, a duct 4, and a plurality of branch ducts 5a to 5d. The central air blower 6 distributes the air heat-exchanged by the heat exchanger 2 to the plurality of air-conditioned rooms 1a to 1d through the duct 4 and the plurality of branch ducts 5a to 5d by the air blower 3.

  The heat exchanger 2 performs heat exchange with the supplied air. The heat exchanger 2 cools the supplied air, for example. Alternatively, the heat exchanger 2 heats supplied air, for example. For example, the air exchanged by the heat exchanger 2 is sucked by the blower 3 and sent to the duct 4. Although FIG. 1 illustrates a configuration in which the heat exchanger 2 is arranged on the suction side of the blower 3, the heat exchanger 2 may be arranged on the blowout side of the blower 3.

  The blower 3 guides air to the heat exchanger 2 from the outside, for example, and sends the air heat-exchanged by the heat exchanger 2 to the duct 4. The blower 3 is, for example, a multiblade fan.

  The duct 4 guides the air sent by the blower 3 to the plurality of branch ducts 5a to 5d. The duct 4 is heat-insulated with glass wool or the like on its inner wall surface or outer wall surface, for example.

  The plurality of branch ducts 5a to 5d respectively guide the air guided by the duct 4 to the corresponding air-conditioned rooms 1a to 1d. Thereby, air is blown into the air-conditioned rooms 1a to 1d. Each branch duct 5a-5d is heat-insulated with glass wool or the like on its inner wall surface or outer wall surface, for example.

  The air volume setting unit 11 sets the individual required air volume for each of the plurality of air-conditioned rooms 1a to 1d. The individual required air volume is an air volume required (required) individually for each of the air-conditioned rooms 1a to 1d. The air volume setting unit 11 sets the individual required air volume within a setting range as shown in FIG. 3, for example.

  The plurality of air flow rate adjusting devices 7a to 7d are mounted on the corresponding branch ducts 5a to 5d, respectively, and adjust the air flow rate of the air passing through the branch ducts 5a to 5d based on the set individual required air volume. To do. Specifically, each blast volume adjusting device 7a-7d has dampers 8a-8d, for example. Each of the dampers 8a to 8d adjusts the amount of air blown through the branch ducts 5a to 5d based on the individual required air volume of the air-conditioned rooms 1a to 1d, depending on the opening degree.

  Each of the plurality of room temperature setting means 18a to 18d is installed on the wall surface or the like of the corresponding air-conditioned room 1a to 1d, and sets the room temperature of the air-conditioned room 1a to 1d, for example, according to an operation from the user.

  Each of the plurality of room temperature detecting means 9a to 9d is installed on the wall surface or the like of the corresponding air-conditioned room 1a to 1d, and periodically detects the room temperature of the air-conditioned room 1a to 1d, for example. Each room temperature detection means 9a-9d is a temperature thermistor, for example.

  The room temperature setting means 18a to 18d and the room temperature detection means 9a to 9d may be incorporated in one controller installed in the air-conditioned rooms 1a to 1d, or may be centrally managed independently of each other.

  The resistance coefficient setting means 12 sets the friction resistance coefficients of a plurality of air passages from the central air blower 6 to the connection to the plurality of air-conditioned rooms 1a to 1d via the duct 4 and the plurality of branch ducts 5a to 5d. To do.

  The pressure loss determining unit 14 receives the information on the individual required air volume of each of the air-conditioned rooms 1 a to 1 d from the air volume setting unit 11, and receives the information on the frictional resistance coefficient of each ventilation path from the resistance coefficient setting unit 12. The pressure loss determining means 14 determines the pressure loss of each air flow path according to the individually required air volume of each of the air-conditioned rooms 1a to 1d and the friction resistance coefficient of the corresponding air flow path.

  The damper opening / closing determining means 17 determines the opening / closing degrees of the dampers 8a to 8d of the air flow rate adjusting devices 7a to 7d according to the signal from the pressure loss determining means 14.

  The total required air volume determining unit 15 receives the individual required air volumes of the air-conditioned rooms 1 a to 1 d from the air volume setting unit 11. The total required air volume determining means 15 determines the total required air volume that is the sum of the individual required air volumes of the air-conditioned rooms 1a to 1d by obtaining the sum of the individual required air volumes of the air-conditioned rooms 1a to 1d.

  The frequency determining unit 16 receives information on the total required air volume from the total required air volume determining unit 15. The frequency determining means 16 determines the drive frequency of the fan motor in the blower 3 and supplies it to the fan motor so that the total required air volume, that is, the actual air volume of the air conditioner 100 can be obtained. Thereby, the air blower 3 sends the air of the air volume according to the total required air volume to the duct 4.

  Note that each of the above-mentioned means has a function of storing / storing each set or determined value.

  Next, the internal configuration of the air volume setting means 11 will be described.

  As shown in FIG. 1, the air volume setting unit 11 includes a storage unit 11a, an initial value setting unit 11b, a determination unit 11c, a correction unit 11d, and a generation unit 11e.

  The storage unit 11a stores air volume determination information for determining the individual required air volume from the temperature difference between the detected room temperature and the set room temperature. For example, as shown in FIG. 3, the air volume determination information may be information in which a plurality of temperature difference signals (a plurality of temperature difference ranges) and a plurality of individual required air volumes are associated with each other in a table form. The air volume determination information as shown in FIG. 3 is obtained experimentally in advance, for example. Alternatively, the air volume determination information may be information formulated using, for example, a function indicating the relationship between the temperature difference and the individual required air volume.

  When the air-conditioning operation is started in one or more of the air-conditioned rooms 1a to 1d, the initial value setting unit 11b is configured such that the room temperature detected by the room temperature detection units 9a to 9d and the room temperature set by the room temperature setting units 18a to 18d. A temperature difference signal indicating a temperature difference is acquired for each of the air-conditioned rooms 1a to 1d. The temperature difference signal may be generated by, for example, the room temperature detection means 9a to 9d, or may be generated by the generation means 11e in the air volume setting means 11. The initial value setting means 11b determines the initial value of the individual required air volume of each of the air-conditioned rooms 1a to 1d to be air-conditioned in accordance with the acquired temperature difference signal and the air volume determination information stored in the storage means 11a. To set.

  The determination unit 11c is distributed to the air-conditioned rooms 1a to 1d based on the room temperature detected by the room temperature detection units 9a to 9d and the room temperature set by the room temperature setting units 18a to 18d, for example, at regular intervals. It is determined whether the cooling / heating capacity is excessive or insufficient.

  Specifically, the determination unit 11c determines that the room temperature detected by the room temperature detection units 9a to 9d is lower than the room temperature set by the room temperature setting units 18a to 18d for the air-conditioned rooms 1a to 1d performing the cooling operation. It is determined that the capacity is excessive. The determination unit 11c has insufficient capacity when the room temperature detected by the room temperature detection units 9a to 9d is higher than the room temperature set by the room temperature setting units 18a to 18d with respect to the air-conditioned rooms 1a to 1d performing the cooling operation. Is determined.

  Further, the determining unit 11c has excessive capacity when the room temperature detected by the room temperature detecting units 9a to 9d is higher than the room temperature set by the room temperature setting units 18a to 18d with respect to the air-conditioned rooms 1a to 1d performing the heating operation. It is determined that The determination unit 11c determines that the capacity is insufficient when the room temperature detected by the room temperature detection units 9a to 9d is lower than the room temperature set by the room temperature setting units 18a to 18d.

  The correcting unit 11d corrects the individual required air volume set for the air-conditioned rooms 1a to 1d determined to be excessive by the determining unit 11c. The correcting unit 11d corrects the individual required air volume set for the air-conditioned rooms 1a to 1d determined to be insufficient by the determining unit 11c.

  Next, operation | movement of the air conditioner 100 is demonstrated using the flowchart shown in FIG. FIG. 2 is a flowchart showing an operation of correcting the individual required air volume of each air-conditioned room 1a to 1d of the air conditioner 100. When the air conditioning operation by the air conditioner 100 (for example, one or more of the air-conditioned rooms 1a to 1d) is started, for example, operation control is performed according to the following routine.

  In step S1, the room temperature detection means 9a to 9d receive the room temperature information set from the corresponding room temperature setting means 18a to 18d, and subtract the set room temperature from the detected room temperature to obtain a temperature difference signal, for example. Input to the setting means 11. The air volume setting means 11 receives the temperature difference signal from the room temperature detection means 9a to 9d.

  In step S2, the initial value setting unit 11b of the air volume setting unit 11 determines an initial value of the individual required air volume according to the temperature difference signal input in step S1 and the air volume determination information stored in the storage unit 11a. And set. For example, the initial value setting means 11b sets the value of the individual required air volume corresponding to the input temperature difference signal in the tabulated information shown in FIG.

  In step S3, the determination unit 11c of the air volume setting unit 11 determines whether or not the correction process for the individual required air volume is started. If the determination unit 11c starts, the process proceeds to step S4, and if not, the process proceeds to step S8.

  In step S4, the room temperature detection means 9a to 9d receive the room temperature information set from the corresponding room temperature setting means 18a to 18d, and subtract the set room temperature from the detected room temperature to obtain a temperature difference signal, for example. Input again to the setting means 11. The air volume setting means 11 receives the temperature difference signal from the room temperature detection means 9a to 9d.

  In step S5, the determination means 11c of the air volume setting means 11 determines whether the air conditioning capacity of the air-conditioned rooms 1a to 1d is excessive or insufficient according to the temperature difference signals from the room temperature detection means 9a to 9d. When it is determined that the air conditioning capacity of the air-conditioned rooms 1a to 1d is excessive, the determining means 11c of the air volume setting means 11 advances the processing of the air-conditioned rooms 1a to 1d to step S6, and the air-conditioned rooms 1a to 1d. When it is determined that the cooling / heating capacity of 1d is insufficient, the process of the air-conditioned rooms 1a to 1d proceeds to step S7.

  In step S6, the correction means 11d of the air volume setting means 11 decreases the individual required air volume of the air-conditioned rooms 1a to 1d by a predetermined value from the initial value set in step S2 or from the immediately preceding correction value. To correct. For example, the correction unit 11d corrects the value so that the value is decreased by one rank among the plurality of individual required air volumes shown in FIG.

  In step S7, the correction means 11d of the air volume setting means 11 increases the individual required air volume of the air-conditioned rooms 1a to 1d by a predetermined value from the initial value set in step S2 or from the immediately preceding correction value. To correct. For example, the correcting unit 11d corrects so as to increase the value to one rank higher among the plurality of individual required air volumes shown in FIG.

  In step S <b> 8, the air volume setting unit 11 determines whether to continue the air conditioning operation. The air volume setting unit 11 returns the process to step S3 when continuing the air conditioning operation, and ends the process when stopping the air conditioning operation.

  By repeating the series of steps, that is, the correction control of the individual required air volume for each air-conditioned room 1a to 1d, it is possible to reduce the excess or deficiency of the cooling / heating capacity for each air-conditioned room 1a to 1d.

  In addition, by performing these series of steps on the individual required air volumes of the air-conditioned rooms 1a to 1d, the actual air volume of the air conditioner 100 that is the sum of the individual required air volumes of the air-conditioned rooms 1a to 1d is increased or decreased. Do. Thereby, it becomes possible to obtain the individual required air volume corrected according to the excess or deficiency of the cooling / heating capacity of each air-conditioned room 1a to 1d regardless of the resistance coefficient of the air flow path, By using the friction resistance coefficient of the air flow path connected to each air-conditioned room 1a-1d set by the resistance coefficient setting means 12, the pressure loss determining means 14 of the air flow path connected to each air-conditioned room 1a-1d. The pressure loss is calculated, and the damper opening / closing determining means 17 opens the dampers 8a to 8d of the air flow rate adjusting devices 7a to 7d based on the pressure loss ratio of the air flow paths connected to the air-conditioned rooms 1a to 1d. By determining the degree, it becomes possible to control the distribution of the amount of air flow to each of the air-conditioned rooms 1a to 1d regardless of the initial frictional resistance coefficient of the air flow path.

  In addition, a series of control operation | movement of said step S3 to step S8 is repeatedly performed for every air-conditioned room 1a-1d, for example with a fixed time interval. Moreover, let the number of connection of a ventilation path be the number of connections (for example, 4 in the case of FIG. 1) of the ventilation volume adjusting devices 7a-7d connected to the air conditioner 100.

  In addition, the temperature difference signal input from the room temperature detection means 9a to 9d to the air volume setting means 11 in step S1 or step S4 is, for example, a signal indicating a numerical value obtained by subtracting the set room temperature from the detected room temperature (for example, 3 may be “≦ −5” to “5 ≦”) shown in FIG. 3, or a numerical value range of one code (for example, “temperature difference signal” shown in FIG. 3) up to a temperature difference within a certain range. May be grouped into a code for identifying whether or not they belong to.

  In step S5, whether the air-conditioned rooms 1a to 1d are excessively or deficient in cooling / heating capacity is determined based on the temperature difference signal (for example, the detected room temperature) from each room temperature detecting means 9a to 9d in the cooling operation. If the room temperature is minus), it is judged that the capacity is excessive, and if the temperature difference signals from the room temperature detecting means 9a to 9d are positive values, it is judged that the capacity is insufficient. When the temperature difference signal from -9d is a positive value, it may be determined that the capacity is excessive, and when the temperature difference signal from each of the room temperature detection means 9a-9d is a negative value, the capacity is insufficient. Thereby, it becomes possible to distribute more blast volume to the air-conditioned rooms 1a to 1d that have not reached the set room temperature among the air-conditioned rooms 1a to 1d, and reach the set room temperature earlier. It becomes possible.

  As described above, in the embodiment, the initial value setting unit 11b sets the individual required air volumes of the air-conditioned rooms 1a to 1d to the initial values based on the air volume determination information (for example, the table information shown in FIG. 3). Later, the correction unit 11d corrects the air demanded air volume set for the air-conditioned rooms 1a to 1d determined to be excessive by the determination unit 11c, and the determination unit 11c has insufficient capacity. It correct | amends so that the individual request | requirement air volume set with respect to the air-conditioned rooms 1a-1d determined to be increased. Thereby, it is appropriate for each air-conditioned room 1a to 1d according to the excess or deficiency of the air-conditioning capacity of each air-conditioned room 1a to 1d, regardless of the accuracy of the resistance coefficient of each air flow path or the conveyance air volume, that is, the accuracy of the air volume determination information It is possible to distribute a large amount of air flow. That is, according to the embodiment, air having an appropriate air volume can be distributed to the air-conditioned rooms 1a to 1d.

  In addition, you may make it determine the excess / deficiency determination of the air conditioning capability of step S5, when the temperature difference signal from each room temperature detection means 9a-9d exceeds a certain fixed range. That is, the determination unit 11c of the air volume setting unit 11 determines that the temperature difference between the room temperature detected by the room temperature detection units 9a to 9d and the room temperature set by the room temperature setting units 18a to 18d is a threshold range (for example, as shown in FIG. The determination in step S5 may be performed when the temperature difference exceeds a certain range. In this case, it is possible to give a certain degree of likelihood to the determination of the distribution control of the blast amount, and it is possible to suppress the sudden opening of the dampers 8a to 8d in a short time, and to each of the air-conditioned rooms 1a to 1d. It is possible to suppress sudden fluctuations in the air flow balance and noise caused by the dampers 8a to 8d.

  In addition, the threshold range may be set such that the temperature difference signal has a positive value and a negative value and different absolute values, or the same absolute value may be set. When the same absolute value (threshold value) is set, the absolute value of the temperature difference and the threshold value may be compared.

  In addition to the method of using the temperature difference between the set room temperature of the air-conditioned rooms 1a to 1d and the actual room temperature as an index used to determine whether the air-conditioning rooms 1a to 1d are in excess or insufficient, the air-conditioned room There are a method of measuring 1V to 1d PMV (Predicted Mean Vote), a method of measuring radiant heat, and the like.

  In step S6 or S7, the individual required air volume can be corrected repeatedly, but a predetermined correction range is set such that, for example, correction is not performed for ± 10% or more of the individual required air volume before correction. Also good. In other words, the correction unit 11d may have a predetermined correction range (for example, a range of ± 10% or more) with respect to the individual required air volume before correction for the correction of the individual required air volume. Thereby, at the time of calculating the pressure loss of the ventilation path, fluctuation from the previous pressure loss can be suppressed within a certain range, and the opening degree of the dampers 8a to 8d can be suppressed from opening and closing more rapidly than before the change. For this reason, the noise which originates in the rapid fluctuation | variation of the ventilation balance to each air-conditioned room 1a-1d and damper 8a-8d can be suppressed.

  Moreover, as shown in FIG. 1, the air conditioner 100 may further include a plurality of capacity setting means 10a to 10d. Each of the plurality of capacity setting means 10a to 10d is installed on the wall surface of the corresponding air-conditioned room 1a to 1d and sets the individual required capacity of the air-conditioned room 1a to 1d. The individual required capacity is the capacity corresponding to the cooling / heating capacity required according to the room temperature volume of the air-conditioned rooms 1a to 1d. The individual required capacity is, for example, a value (for example, “1” to “3” shown in FIG. 4) in which the room temperature volumes of the air-conditioned rooms 1a to 1d are ranked. That is, each of the plurality of capability setting means 10a to 10d sets the individual required capability within the setting range shown in FIG. The air volume setting means 11 sets the individual required air volume within the setting range shown in FIG.

  At this time, the air volume determination information stored by the storage unit 11a may be information for determining the individual required air volume from the detected room temperature and the difference between the set room temperature and the set individual required capacity. For example, as shown in FIG. 4, the air volume determination information may be information in which a plurality of temperature differences, a plurality of individual required capacities, and a plurality of individual required air volumes are associated with each other in a table form. The air volume determination information shown in FIG. 4 is obtained experimentally in advance, for example. Alternatively, the air volume determination information may be information formulated using, for example, a function indicating a relationship between the temperature difference, the individual required capacity, and the individual required air volume. Then, the air volume setting unit 11 sets the initial value of the individual required air volume using the air volume determination information stored in the storage unit 11a.

  Thus, by providing the capacity setting means 10a to 10d for setting the required air conditioning capacity according to the volume of each air-conditioned room 1a to 1d as the individual required capacity of each air-conditioned room 1a to 1d, the volume is small. It is possible to request and control the air volume corresponding to each specified load so that the air-conditioned room is not excessively blown and the air-conditioned room having a large volume is not excessively blown.

  For example, before the start of air conditioning operation, by setting the cooling / heating capacity corresponding to the volume of each air-conditioned room 1a to 1d as the individual required capacity of the air-conditioned rooms 1a to 1d, in step S2 shown in FIG. In addition to setting the initial value of the required capacity, it corresponds to the initial value of the individual required capacity in accordance with the temperature difference signal input in step S1 and the air volume determination information (for example, the tabulated information shown in FIG. 4). It becomes possible to set the initial value of the individual required air volume. Thereby, it becomes easy to make the actual room temperature of each of the air-conditioned rooms 1a to 1d reach the set room temperature earlier.

  Moreover, even if it becomes easy to reach the set room temperature, since the air flow rate to the air-conditioned rooms 1a to 1d is fixed to a certain range of control by performing the capacity setting, the capacity setting may vary depending on the season and usage conditions. Since it is not always appropriate, it may result in excessive or insufficient air conditioning. Therefore, in step S5, it is determined whether the air conditioning capacity of each air-conditioned room 1a-1d is excessive or insufficient from the temperature difference signals from the room temperature detecting means 9a-9d, and if it is determined that the capacity is excessive, step S6 is performed. Thus, the individual required capacity of the air-conditioned rooms 1a to 1d is corrected so as to be reduced by one rank from the initial value (or the value of the individual required capacity corrected immediately before) set in step S2, and it is determined that the capacity is insufficient. In step S7, the individual required air volume of the air-conditioned rooms 1a to 1d is corrected so as to be increased by one rank from the initial value (or the value of the individual required capacity corrected immediately before) set in step S2. Thereby, it becomes possible to increase / decrease the individual request | requirement air volume of air-conditioned room 1a-1d according to the excess or deficiency of air-conditioning capability, and air-conditioned room 1a which has not reached setting room temperature among each air-conditioned room 1a-1d. With respect to ˜1d, it becomes possible to distribute a larger amount of air flow, and to reach the set room temperature sooner.

  Further, in step S6 or S7, a certain correction range may be set, such as setting upper and lower limits for correction of the individual required capacity as shown in FIG. In other words, the correcting unit 11d may have a predetermined correction range (for example, a range of ± 1) with respect to the individual required ability before correction for the correction of the individual required ability. Thereby, at the time of calculating the pressure loss of the ventilation path, fluctuation from the previous pressure loss can be suppressed within a certain range, and the opening degree of the dampers 8a to 8d can be suppressed from opening and closing more rapidly than before the change. For this reason, the noise which originates in the rapid fluctuation | variation of the ventilation balance to each air-conditioned room 1a-1d and damper 8a-8d can be suppressed.

  In step S3, in order to confirm the correction result, it is conceivable to perform a determination process that stops the next correction process until a predetermined period elapses after the correction process. When the air-conditioning operation is started in one or more of the air-conditioned rooms 1a to 1d in a state where the air-conditioning rooms 1a to 1d are stopped, the routine of steps S3 to S8 is not performed for a predetermined time from the start of the operation. You may do it. That is, the determination unit 11c of the air volume setting unit 11 starts the air-conditioning operation of one or more air-conditioned rooms 1a to 1d from the state where all the air-conditioning operations of the plurality of air-conditioned rooms 1a to 1d are stopped. The determination in step S3 may be suspended until a predetermined time has elapsed from the start, and the determination in step S3 may be performed in response to the elapse of the predetermined time. Thereby, excessive correction of the room temperature of the air-conditioned rooms 1a to 1d at the start of the air-conditioning operation can be avoided, and the opening degree of the dampers 8a to 8d can be suppressed from changing rapidly in a short time. It is possible to suppress sudden fluctuations in the air flow balance to 1d and noises caused by the dampers 8a to 8d.

  As described above, the air conditioner according to the present invention is useful for distributing air to a plurality of air-conditioned rooms.

DESCRIPTION OF SYMBOLS 1 Air-conditioned room 2 Heat exchanger 3 Air blower 4 Duct 5a-5d Branch duct 6 Concentrated air blower 7a-7d Air flow adjustment apparatus 8a-8d Damper 9a-9d Room temperature detection means 10a-10d Capacity setting means 11 Air volume setting means 11a Memory | storage Means 11b Initial value setting means 11c Determination means 11d Correction means 11e Generation means 12 Resistance coefficient setting means 14 Pressure loss determination means 15 Total required air volume determination means 16 Frequency determination means 17 Damper opening / closing determination means 18a to 18d Room temperature setting means

Claims (7)

A centralized blower that distributes and blows air that has been heat-exchanged by a heat exchanger to a plurality of air-conditioned rooms through a duct and a plurality of branch ducts;
An air volume setting means for setting the air flow required for the air-conditioned room as an individual required air volume for each of the plurality of air-conditioned rooms;
A plurality of air flow adjustment devices for adjusting the air flow through the plurality of branch ducts based on the set individual required air flow;
A plurality of room temperature setting means for setting the room temperature of the plurality of air-conditioned rooms;
A plurality of room temperature detecting means for detecting the room temperature of the plurality of air-conditioned rooms;
With
The air volume setting means includes
An initial value setting means for setting an individual required air volume of an air-conditioned room that performs air-conditioning operation to an initial value at the start of air-conditioning operation of one or more air-conditioned rooms;
When the detected room temperature is lower than the set room temperature, it is determined that the capacity of the air-conditioned room performing the cooling operation is excessive, and the capacity is determined when the detected room temperature is higher than the set room temperature. When the detected room temperature is higher than the set room temperature, it is determined that the capacity is excessive for the air-conditioned room that performs heating operation, and the detected room temperature is set. Determination means for determining that the capacity is insufficient when the temperature is lower than room temperature;
For the air-conditioned room that has been determined to be excessive in capacity by the determining means so as to reduce the set individual required air volume, and for the air-conditioned room that has been determined to be insufficient in capacity by the determining means Correction means for correcting so as to increase the set individual required air volume,
An air conditioner characterized by comprising: The air conditioner according to claim 1, wherein the determination unit performs the determination when a difference between the detected room temperature and the set room temperature exceeds a threshold range. The air conditioner according to claim 1, wherein the correction unit has a predetermined correction range for correcting the individual required air volume. A capacity setting means is further provided for setting each of the plurality of air-conditioned rooms with an air-conditioning capacity required according to the volume of the air-conditioned room as an individual required capacity,
The air volume setting means further includes storage means for storing air volume determination information for determining an individual required air volume from the detected room temperature and the difference between the set room temperature and the set individual required capacity.
The air conditioner according to claim 1, wherein the air volume setting means sets an initial value of an individual required air volume using the stored air volume determination information. The correction means corrects the individual required capacity set by the capacity setting means so that the individual required air volume of the air-conditioned room determined to be excessive is reduced, and the corrected target determined to be insufficient is determined. 5. The air conditioner according to claim 4, wherein the individual required capacity set by the capacity setting unit is corrected so that the individual required air volume of the air conditioning room increases. The air conditioner according to claim 4, wherein the correction unit has a predetermined correction range for correcting the individual required capacity. When the air conditioning operation of one or more air-conditioned rooms is started from a state where all air-conditioning operations of the plurality of air-conditioned rooms are stopped, the determination unit performs the determination until a predetermined time elapses from the start. The air conditioner according to claim 1, wherein the air conditioner is suspended.

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